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I have been looking into specifying a coating system currently trademarked as LIQ Fusion 7000FBE. It states it is far superior to glass lined systems and field applied coating system like Hydroflon as provided by Tnemec. Does anyone have insight to the durability and performance of this...

Update - we flushed all of the lines at about 7.5 fps. Air came out of three fire hydrants - a lot of air in fact. Trending data now shows that the pumps increased flow by 21 gpm (45 gpm pre and 66 gpm post flush). Based on the pump curve, the difference in head is about 150 feet. This makes...

Good thought on the air; sneaky lil culprit air can be. We did a flow test to waste on the pumps - though at the time we thought the original pumps were in use. So the analysis made no sense whatsoever. Now that we verified that they'd been swapped with another pump I yet need to plot and...

118 psi. I haven't confirmed the existence or leaking of a check valve, though normally they ARE installed as standard not optional.

Please look at the HGL figure. It tells you why they need boosting. One could argue this should have been installed downstream at a higher elevation but that isn't the concern or issue. Boosting pressure is boosting pressure no matter the location.

Yes it does maintain that pressure upstream/incoming pipe. No they are mounted vertically just like a submersible well pumps and yes enclosed system except that it pumps to atmosphere at the tank as shown on the original attachment.

They are only 10 feet deep. there is essentially 60-65 psi of water above them with the residual system pressure as read by the pressure recorder on the fire hydrant right next to them. such as these: http://www.bakermonitor.com/content/pitless-booster-stations

Existing duplex, pitless water booster station serves 52 homes. Incoming transmission pipe is 6" PVC and serves about 3 homes along it. Piping thru pump house is 3-inch. Distribution piping consists of 6" PVC loops water mains that fills a stand pipe with dimensions of 14' and 110' tall. See...

I will keep an open mind regarding automation. Our next step is to perform (at least one) pilot studies to evaluate the best replacement. It seems from touring other newer facilities the processes within the treatment system unit are, in-fact, automated.

bimr 1. Only time will tell - it took three years for it to leak as bad as it did from the base. Now I expect it to creep up the tank wall and start leaking above the curb. We did patch welding to all the holes along the bottom 18" so it has to make it that height and then out. 2...

We just completed this project last December. It was a fun and unique project. The Aeralater unit (removes iron and manganese) began to leak from the steel base plate about 3 years ago at a rate less than 1 gpm. The tank leaked as much as 30 gpm or about 20% of daily need prior to this...

bimr: I didn't disclose that in my post, but we have a clause in the contract that if the contractor doesn't submit shop drawings for approval to the engineer that they assume responsibility for installing the specified product...so, unfortunately there are no shop drawings on record for what...

We just installed at PRV Station #2 a 1-1/2" Cla-Val Model 990 with a label of 80-140 psi on it - that caught my attention because I needed the other one with an adjustment range of 30-90 psi as my outlet pressure required is 40 psi. This put me in a bit of a panic, so I ran down to the site...

We just installed at PRV Station #2 a 1-1/2" direct acting pressure reducing valve with a label of 80-140 psi on it - that caught my attention because I needed the other one with an adjustment range of 30-90 psi as my outlet pressure required is 40 psi. This put me in a bit of a panic, so I...

Ok. So when I use the word conservative when discussing design, I use it in the context that the design will add more of a safety factor to it; but my boss uses that the terminology in reverse...the design is liberal, because you are adding to the design. And no matter if you like to use...

Ron - why would the soils cease the ability to do the mix-in-place? is it because of the bearing capacity of the soil couldn't bear the equipment required to do the work? francesca - that makes sense to stage it that way.

Thank you for your response it only makes for more questions...heh heh The soils are fat clays so are unsuitable. Blow counts 4-8. So let me regurgitate your recommendation and see if it makes sense in steps of construction: 1. Remove existing asphalt/limestone thickness and perform...

there is an existing subdivision road (undeveloped yet) that has settled alot due to lack of compaction of the sewer main backfill. this has called for its replacement prior to any homes being built. so the existing road should have been 6" ac over 6" limestone, however it was constructed...

Smoke testing may be done inexpensively depending on what local programs are available. For example our rural water association asks that you donate any amount you can up to a maximum amount not to exceed actual cost. Also, I would recommend that you have talks with the wastewater operator to...

We are designing a new lift station, forcemain, and a 2-cell, 358-day controlled discharging facultative lagoon with the primary depth 6' total (4' working) and the secondary depth 8' total (6'working). Each cell is 8-acres. Located in Nebraska, USA latitude 42-degrees pretty cold winters...